There Were Four Steps in the GPS Revolution

There were four steps in the GPS revolution.First new technologies were developed and became readily available; second, __________; third, competitive forces developed new products and services; and finally consumer changed becoming "geo-enthusiasts."

A) GPS technology became a necessity rather than a luxury
B) profits exceeded costs resulting in GPS units became cash cows
C) demand exceeded production capabilities so multiple new production facilities were built
D) industry backed a campaign to increase the number of students going into the applied sciences
E) regulatory changes were made allowing cell phone frequencies and former military technologies available for commercial use